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Parents and children of check-in [3c566e41]
|15:19||Performance improvements: Avoid unnecessary seeks when doing a single-row UPDATE on a WITHOUT ROWID table. check-in: 6f187a0f user: drh tags: trunk|
|12:14||Merge change to drop the mutex on the multiplexor before entering the xRead VFS call, in order to enhance parallelizability. check-in: 3c566e41 user: drh tags: trunk|
|01:09||Optimize out a NotExists/NotFound opcode that occurs in UPDATE processing after constraint checks if there is no possiblity that the constraint checking code might have moved the cursor. check-in: 74e3ee2e user: drh tags: trunk|
|13:15||Drop the mutex on the multiplexor before entering the xRead VFS call. Closed-Leaf check-in: a00d2ed4 user: drh tags: multiplex-parallel-read|